Synthesis, electrochemical and spectroelectrochemical properties of peripherally tetra-imidazole substituted metal free and metallophthalocyanines

The synthesis and characterization of novel organosoluble peripherally tetra imidazole substituted metal-free (4), zinc(II) (5), nickel(II) (6), cobalt(II) (7), lead(II) (8) and oxo-titanium(IV) (9) phthalocyanines are described for the first time in this study. Electrochemical and spectroelectroche...

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Bibliographic Details
Published in:Dyes and pigments 2013-02, Vol.96 (2), p.483-494
Main Authors: Akçay, Hakkı Türker, Bayrak, Rıza, Demirbaş, Ümit, Koca, Atıf, Kantekin, Halit, Değirmencioğlu, Ismail
Format: Article
Language:English
Subjects:
Cationic
CHEMICAL PROPERTIES
Color
Copper
COPPER PHTHALOCYANINE
Couples
DYES
Electrochemistry
Electron transfer
FABRICATION
Imidazole
MICA
Phthalocyanine
Soluble
Spectroelectrochemistry
Synthesis
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Summary:The synthesis and characterization of novel organosoluble peripherally tetra imidazole substituted metal-free (4), zinc(II) (5), nickel(II) (6), cobalt(II) (7), lead(II) (8) and oxo-titanium(IV) (9) phthalocyanines are described for the first time in this study. Electrochemical and spectroelectrochemical measurements exhibit that while copper phthalocyanine gives only ring-based electron transfer reactions, incorporating redox active metal centers, Co(II), and Ti(IV)OPc, into the phthalocyanine core extends the redox richness of the phthalocyanine ring with the metal-based reduction and oxidation couples of the metal centers in addition to the common phthalocyanine ring-based electron transfer processes. In-situ electrocolorimetric measurements of the complexes allow quantification of color coordinates of the each electrogenerated anionic and cationic redox species. [Display omitted] ► The preperation of imidazole substituted phthalonitrile. ► Synthesis of its corresponding metal free and metallophthalocyanines. ► The electrochemical and spectroelectrochemical studies were performed.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2012.09.005